A carbon atom is not a metallic element. Its location on the periodic table indicates that it is a non metal since the further right something is on the periodic table, the less metallic that element is.
In chemistry, the elements that exist with electrical charges are called ions. These ions can carry a positive charge, for which they are called cations, or a negative charge, for which they are called anions. These ions carry an electric charge because they do not conform to the stable number of electrons of their neutral atom. Because of this, they carry excess electrons for cations, and a lack of electrons for the anions.
When cations and anions form together such that there is a complete transfer of electrons so that each ion would be neutral, an ionic bond is formed. If you write the reaction, the superscripts and subscripts would just cross-multiply. If the cation is A⁺ᵃ, and the anion is B⁻ˣ, then the ionic compound would then be AₓBₐ. Of x=a, then they will cancel out which will yield AB. Therefore, the ionic compound for each pair of ions are:
NH₄⁺ + OH⁻ = NH₄OH
Mg²⁺ + CO₃²⁻ = MgCO₃
Fe³⁺ + PO₃⁴⁻ = Fe₄(PO₃)₃
Answer:
4.55x10⁻⁴ atm
Explanation:
When the balance is used, it first must be tared, it means that the weight of the vessel will be discounted, so the mass of the gas produced must be above 0.5 mg to be read in the balance.
The molar mass of the CO2 is 44 g/mol, so, for a mass of 0.5 mg = 0.0005 g, the number of moles is:
n = 0.0005/44
n = 0.000011 mol
The ideal gas law is:
PV = nRT
Where P is the pressure, V is the volume, R is the constant of the gases (0.082 atm.L/mol.K), and T is the temperature (30°C = 303 K), so:
P*0.6 = 0.000011*0.082*303
P = 4.55x10⁻⁴ atm
250 --> 125 --> 62.5 --> 31.25
each arrow equals one half life, so 3 half lives
14 days/ 3 half lives =
4.67 days = half life
8. If not 9? I'm glad that I could help brainliest?
